luau/bench/tests/shootout/queen.lua

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--[[
MIT License
Copyright (c) 2017 Gabriel de Quadros Ligneul
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Sync to upstream/release/655 (#1563) ## New Solver * Type functions should be able to signal whether or not irreducibility is due to an error * Do not generate extra expansion constraint for uninvoked user-defined type functions * Print in a user-defined type function reports as an error instead of logging to stdout * Many e-graphs bugfixes and performance improvements * Many general bugfixes and improvements to the new solver as a whole * Fixed issue with used-defined type functions not being able to call each other * Infer types of globals under new type solver ## Fragment Autocomplete * Miscellaneous fixes to make interop with the old solver better ## Runtime * Support disabling specific built-in functions from being fast-called or constant-evaluated (Closes #1538) * New compiler option `disabledBuiltins` accepts a list of library function names like "tonumber" or "math.cos" * Added constant folding for vector arithmetic * Added constant propagation and type inference for vector globals (Fixes #1511) * New compiler option `librariesWithKnownMembers` accepts a list of libraries for members of which a request for constant value and/or type will be made * `libraryMemberTypeCb` callback is called to get the type of a global, return one of the `LuauBytecodeType` values. 'boolean', 'number', 'string' and 'vector' type are supported. * `libraryMemberConstantCb` callback is called to setup the constant value of a global. To set a value, C API `luau_set_compile_constant_*` or C++ API `setCompileConstant*` functions should be used. --- Co-authored-by: Aaron Weiss <aaronweiss@roblox.com> Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: Aviral Goel <agoel@roblox.com> Co-authored-by: Daniel Angel <danielangel@roblox.com> Co-authored-by: Jonathan Kelaty <jkelaty@roblox.com> Co-authored-by: Hunter Goldstein <hgoldstein@roblox.com> Co-authored-by: Varun Saini <vsaini@roblox.com> Co-authored-by: Vighnesh Vijay <vvijay@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com> --------- Co-authored-by: Aaron Weiss <aaronweiss@roblox.com> Co-authored-by: Alexander McCord <amccord@roblox.com> Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: Aviral Goel <agoel@roblox.com> Co-authored-by: David Cope <dcope@roblox.com> Co-authored-by: Lily Brown <lbrown@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com> Co-authored-by: Junseo Yoo <jyoo@roblox.com> Co-authored-by: Hunter Goldstein <hgoldstein@roblox.com> Co-authored-by: Varun Saini <61795485+vrn-sn@users.noreply.github.com> Co-authored-by: Alexander Youngblood <ayoungblood@roblox.com> Co-authored-by: Varun Saini <vsaini@roblox.com> Co-authored-by: Andrew Miranti <amiranti@roblox.com> Co-authored-by: Shiqi Ai <sai@roblox.com> Co-authored-by: Yohoo Lin <yohoo@roblox.com> Co-authored-by: Daniel Angel <danielangel@roblox.com> Co-authored-by: Jonathan Kelaty <jkelaty@roblox.com>
2024-12-13 21:02:30 +00:00
local function prequire(name) local success, result = pcall(require, name); return success and result end
local bench = script and require(script.Parent.bench_support) or prequire("bench_support") or require("../../bench_support")
function test()
local N = tonumber((arg and arg[1]) or 8) -- board size
-- check whether position (n,c) is free from attacks
local function isplaceok (a, n, c)
for i = 1, n - 1 do -- for each queen already placed
if (a[i] == c) or -- same column?
(a[i] - i == c - n) or -- same diagonal?
(a[i] + i == c + n) then -- same diagonal?
return false -- place can be attacked
end
end
return true -- no attacks; place is OK
end
-- print a board
local function printsolution (a)
for i = 1, N do
for j = 1, N do
--print(a[i] == j and "X" or "-", " ")
end
--print("\n")
end
--print("\n")
end
-- add to board 'a' all queens from 'n' to 'N'
local function addqueen (a, n)
if n > N then -- all queens have been placed?
printsolution(a)
else -- try to place n-th queen
for c = 1, N do
if isplaceok(a, n, c) then
a[n] = c -- place n-th queen at column 'c'
addqueen(a, n + 1)
end
end
end
end
-- run the program
addqueen({}, 1)
end
bench.runCode(test, "queen")